BMX Upgrade for the Blue Graveler Klunker Bike

I've taken this bike on city rides a few times now. And it's absolutely fantastic! I was gonna sell it. But now I'm too attached. I recently walked into my local bike shop with it, and they'd never seen anything like this bike. It has no problem riding on or off road. U brakes in the front, coaster brake in the back. Simple and mostly recycled parts. Built up from an old banged up Nishiki road bike frame. I can't recommend enough building one of these. The great thing about a Klunker is you build them the way you want.